<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>water</title>
</head>
<style>
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: #3498db;
    }

    .water {
        margin-top: 200px;
        width: 300px;
        height: 300px;
        border: 1px solid #000;
        border-radius: 73% 27% 53% 47% / 36% 43% 57% 64%;
        box-shadow: inset 10px 10px 10px rgba(0, 0, 0, 0.5),
            10px 10px 20px rgba(0, 0, 0, 0.3),
            15px 15px 30px rgba(0, 0, 0, 0.05),
            inset -10px -10px 15px rgba(255, 255, 255, 0.8);
        animation: action 2s linear infinite;
    }

    .water::after {
        content: '';
        width: 20px;
        height: 20px;
        position: absolute;
        top: 240px;
        left: 48%;
        background-color: rgba(255, 255, 255, 0.8);
        border-radius: 44% 56% 68% 32% / 36% 43% 57% 64%;
    }

    .water::before {
        content: '';
        width: 10px;
        height: 10px;
        position: absolute;
        top: 260px;
        left: 47%;
        background-color: rgba(255, 255, 255, 0.8);
        border-radius: 44% 56% 68% 32% / 36% 43% 57% 64%;
    }

    @keyframes action {
        0% {
            border-radius: 73% 27% 53% 47% / 36% 43% 57% 64%;
        }

        25% {
            border-radius: 74% 26% 48% 52% / 36% 43% 57% 64%;
        }

        50% {
            border-radius: 27% 73% 82% 18% / 36% 43% 57% 64%;
        }

        75% {
            border-radius: 49% 51% 46% 54% / 56% 63% 37% 44%;
        }

        100% {
            border-radius: 73% 27% 53% 47% / 36% 43% 57% 64%;
        }
    }
</style>

<body>
    <div class="water"></div>
</body>

</html>